[EXPL] ArGoSoft FTP Server Buffer Overflow Exploit (DELE)
From: SecuriTeam (support_at_securiteam.com)
Date: 04/05/05
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To: list@securiteam.com Date: 5 Apr 2005 16:44:18 +0200
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ArGoSoft FTP Server Buffer Overflow Exploit (DELE)
------------------------------------------------------------------------
SUMMARY
<http://www.argosoft.com/> ArGoSoft FTP Server is "a lightweight FTP
Server for Microsoft Windows platforms"
ArGoSoft FTP server contains a remote buffer overflow in the DELE (delete)
command, that may cause execution of arbitrary machine code. The following
exploit is a proof of concept to the previously mentioned buffer overflow
vulnerability in ArGoSoft FTP Server.
DETAILS
Vulnerable Systems:
* ArGoSoft versions 1.4.2.29 and prior
Exploit:
/*
ArGoSoft Ftp Server remote overflow exploit
author : c0d3r "kaveh razavi" c0d3rz_team@yahoo.com c0d3r@ihsteam.com
package : ArGoSoft 1.4.2.29 and prior
advisory : packetstormsecurity.nl/0503-advisories/argosoftFTP1428.txt
company address : argosoft.com
the bug was found by a mate and reported to argosoft and they released
another version . I downloaded the patched ver at www.argosoft.com
and started to test the server . I saw that they worked with the vul
but they didnt solve the mentioned DELE overflow . he did a wise job
every long char which would be send to server it will write a nullbyte
in the middle so we cant overwrite eip or other registers normally .
The eip would be overwrite like 00410041 which seems useless . the
server
wont crash but it shows that it has beed overflowed . but the program
maker
doesnt think there are people who can do wiser job ! well there is a way
to
get shell.I just mention it.the code below is just show that the server
is vuln.
we can overwrite eip with a nullbyte without sending a null !!!
so think there is a jmp call pop push register is around 004400E1 (for
example)
so we can directly jmp to anywhere we want . anyway if u want u can try
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